Metal window screen



"Sept. 25, 1934-.

L. T. DUNNING 1,974,798

METAL WINDOW S GREEN Filed March 15, 1935 .lhfpunniny dummy Patented Sept. 25, 1934 4 UNITED STATES PATENT OFFICE This invention relates to window screens and more particularly to metal window screens.

An object of this invention is to provide a screen frame structure whereby the frame may 5 be sold in knock-down condition and assembled,

the members of the frame being capableof adjustment to fit varying widths of window frames.

Another object of this invention is to provide a metal frame structure for screens which may be put together by persons unskilled in the art of metal working and which include means whereby the screen wire may be tensioned during the assembling operation.

A further object of this invention is to provide a frame structure of this kind which is so constructed that it may be'used with guide means mounted in the window frame, and the device also includes means to prevent the rusting of the interior of the frame.

The above and various other objects and advantages of this invention will in part be described and in part be understood from the following detailed description of the present preferred embodiment, the same being illustrated in the accompanying drawing wherein:-

Figure 1 is a detail front elevation showing a screen constructed according to the preferred embodiment of this invention.

Figure 2 is an enlarged fragmentary sectional view taken on the line 2--2 of Figure 1.

Figure 3 is an enlarged fragmentary sectional view taken on the line 3-3 of Figurel.

Figure 4 is a fragmentary sectional view taken through one side of a modified form of screen.

Figure 5 is a fragmentary front elevation of a further modification of this invention.

Referring to the drawing wherein like characters of reference designate corresponding parts throughout the several views, the letter F designates a window frame structure including vertical side members of conventional construction. Opposing guide tongues 10 are mounted in the opposite sides of the frame F and constitute means whereby a sliding screen structure may be mounted within the frame F.

The screen structure embodied in this invention includes a pair of inner L-shaped frame members 11 which are constructed from a sheet or strip of metal which is provided with a beading or roll 12 disposed intermediate theopposite longitudinal edges of the L-shaped member 11.

A pair of outer L-shaped frame members 14 which are provided with a complementary beading 13 are adapted to be positioned against the outer face of the inner strips or frame members 11 with the beading 13 loosely engaging about the beading 12.

Interposed between the two beadings 12 and 13 is a wire mesh or screen 15 which is adapted to fill out the space between the two beadings 12 and 13, so that a relatively tight fit will be provided between the beadings of the inner and outer frame members 11 and 14, respectively.

Asshown in Figure 1, the junction between the beading on the two legs of the inner and outer frame members 11 and 12, respectively, is defined by a curve, as at 16, whereas in the modified form of this invention shown in Figure 5, the junction between the two legs of the heading on the inner and outer frame members is defined by a rela tively sharp corner, as at 16'.

The outer or marginal edge portions of the L-shaped frame member 11 are provided with an inwardly offset portion 17, and the confronting marginal portions of the outer frame member 14 are also defined by an outwardly offset portion 18, thereby providing a groove or channel 19 along each leg of the confronting frame members 11 and 14 This channel 19 extends entirely about the frame and on the upper and lower edges of the frame this channel may be closed by a filler in the form of an elongated strip of wood 20, or the like, secured as by nails, rivets or other fastening means 21, which extend through the two channel portions 17 and 18, thereby reinforcing the frame of the screen along the upper and lower edges thereof. It will, of course, be understood that the beadings 12 and 13 also constitute a reinforcing means to strengthen the L-shaped frame members and thereby permit the use of relatively light metal for this frame.

In the mounting of the screen or wire cloth 15 between the two frame members 11 and 14, the pressing of the two members together so that the two beadings interlock will secure the screen 15 therebetween. The screen or wire cloth 15 is stretched or pulled by reason of this pressing of the two frame members together thereby providing a relatively tight screen wire within the frame structure.

On the opposite sides of the frame, the channel 19 is adapted to receive the vertical guide members 10, and in practice, the stress applied to the two frame members 11 and 14 by reason of the telescoping action of the two heads 12 and 13, will put the two channel portions 17 and 18 under a stress, thereby lightly clampingthe frame of the screen upon the guide members 10, so that this screen will readily slide vertically on these guide 110 members 10, but will also stay in desired position at any point along these guide members 10.

The frame members 11 and 14 are preferably shorter than the width of the window and are pressed together with adjacent ends of the outer frame members 14 spaced apart and similarly with the ends of the inner frame members spaced apart, but the space between the inner frame members is beneath the corner of an outer frame member and similarly the blank space between the adjacent ends of the outer frame members is in front of the corner of each of the inner frame members. This blank space on the outside of the frame is filled by an L-shaped filler 22, and the space between the adjacent ends of the inner frame members is filled by an inner filler 23. In this manner, the frame will present a relatively solid structure. The configuration of the fillers 22 and 23 is similar to that of the balance of the frame, that is, each filler has a beading and a marginal channel.

In the modification shown in Figure 4, the inner frame member 11a is similar in all details to the inner frame member 11, with the exception that the marginal offset portion 17 of the frame member 11 is omitted and the marginal portion of the frame member 11a. is straight, as at 17a.

In like manner, the outer frame member 14a is constructed similar to the outer frame member 14 with the exception of the channel portion 18, which is straight, as at 18a, and these two straight portions are secured together by means of fastening members 21a with the wire cloth or screen 15a interposed therebetween. The two straight frame portions 17a and 18a constitute a tongue or tenon 24 which is adapted to engage in a groove provided in a-window frame or in a strip which may be mounted within the desired window opening.

It is, of course. understood that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What is claimed is:

1. A screen comprising inner and outer members, and coacting locking means carried by each member for locking the two members together, said locking means being so constructed as to also tension and hold a wire cloth between the members, the locking means of each member having an area in transverse section equal to the major sector of a circle.

2. A screen comprising inner and outer frame members, a beading formed with the inner member intermediate the marginal edge portions thereof and a beading formed with the other member and positioned intermediate the marginal edges thereof and adapted to engage about the beading on the inner member, and a wire cloth interposed between the two members and engaging between the beading of the members each of said headings being greater in transverse section than a semi-circle.

3. A screen comprising a plurality of members adapted to be positioned to form a rectangular screen frame, said members comprising inner and outer members, coacting means carried by each of the members to lock the members together, said coacting means being integral with the members and each locking means having an area in transverse section equal to the major sector of a circle, and a wire cloth inserted between the members and between said coacting means.

4. A wire screen comprising inner and outer frame members, means for securing the inner members on the outer members in superposed position, said securing means including. substantially tubular members having a size in transverse section greater than a semi-circle, and a wire cloth disposed between the members.

5. A screen comprising a pair of inner L-shaped frame members, a par of outer L-shaped frame members, means for yieldably locking the inner and outer members together to form a rectangular frame, said locking means including substantially tubular members having a size in transverse section greater than a semi-circle, said inner and outer members when held together in assembled relation having the adjacent ends of the inner members spaced apart and the adjacent ends of the outer members spaced apart, inner filler members, outer filler members, said respective filler members filling the spaces between said inner and outer spaced apart members, and a wire cloth positioned between the inner and outer frame members and between the several frame members and the oppositely positioned filler members.

6. A screen comprising inner and outer L-shaped members, coacting means carried by each of the members to lock the inner members onto the outer members, the locking means of each member having an area in transverse section equal to the major sector of a circle, a wire cloth interposed between the members and tensioned thereby, and means integral with the opposite sides of the assembled frame to slidingly engage a guide means carried by a window frame.

7. A rectangular screen comprising inner and outer L-shaped members rectangular in cross sectional configuration, a beading outstanding from the inner members, a beading outstanding from the outer members each of said beadings being positioned intermediate the marginal edge portions of the members, and each of said beadings being greater in transverse section than a semi-circle, a screen cloth positioned between the headings and the members when in assembled relation, said inner and outer members having offset outer marginal portions at least two of which offset marginal portions constitute a slide means to slidably engage a screen, guide means mounted in a window frame, and reinforcing means mounted in the other of said offset marginal portions to coact with the beading of the members to provide a relatively rigid frame structure.

LUTHER T. DUNNING. 

